The FOSSIL RECORDS does not support the evolution of chloroplasts and mitochondria from prokaryotic cells.
- The endosymbiotic theory states that mitochondria and chloroplasts evolved by endosymbiosis between two or more prokaryotes.
- According to the endosymbiotic theory, these eukaryotic organelles (mitochondria and chloroplasts) were engulfed by an early eukaryote cell, but they once lived as independent organisms.
- It has been proposed that mitochondria emerged from aerobic proteobacteria, where chloroplasts evolved from photosynthetic cyanobacteria.
- However, the fossil record shows that the first eukaryotes appeared simultaneously to a sudden increase in diversity of prokaryotes, thereby suggesting an association between these apparently independent processes.
In conclusion, the FOSSIL RECORDS does not support the evolution of chloroplasts and mitochondria from prokaryotic cells.
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